Williams County's estimated 2026 population is 42,779 with a growth rate of 2.42% in the past year according to the most recent United States census data. Williams County is the 5th largest county in North Dakota. The 2010 population was 22,591 and has seen a growth of 89.36% since that time.
Data after 2023 is projected based on recent change
Overall: 31.8 years
Female: 31.8 years
Male: 31.9 years
There are 27,621 adults, (3,934 of whom are seniors) in Williams County.
Female: 18,647 (47.1%)
Male: 20,908 (52.9%)
The racial composition of Williams County includes 79.87% White, 4.7% Black or African American, 3.23% other race, 3.08% Native American, and smaller percentages for Asian, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 31,591 | 79.87% |
| Two or more races | 3,078 | 7.78% |
| Black or African American | 1,858 | 4.7% |
| Other race | 1,279 | 3.23% |
| Native American | 1,218 | 3.08% |
| Asian | 481 | 1.22% |
| Native Hawaiian or Pacific Islander | 50 | 0.13% |
Williams County's average per capita income is $57,824. Household income levels show a median of $85,595. The poverty rate stands at 8.64%.
Name | Median | Mean |
|---|---|---|
| Married Families | $131,974 | - |
| Families | $105,410 | $140,388 |
| Households | $85,595 | $117,741 |
| Non Families | $53,750 | $74,284 |
Average Income
Median Household Income
Poverty Rate